17 lines
573 B
C
17 lines
573 B
C
#ifndef _ASM_IA64_SCATTERLIST_H
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#define _ASM_IA64_SCATTERLIST_H
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#include <asm-generic/scatterlist.h>
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/*
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* It used to be that ISA_DMA_THRESHOLD had something to do with the
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* DMA-limits of ISA-devices. Nowadays, its only remaining use (apart
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* from the aha1542.c driver, which isn't 64-bit clean anyhow) is to
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* tell the block-layer (via BLK_BOUNCE_ISA) what the max. physical
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* address of a page is that is allocated with GFP_DMA. On IA-64,
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* that's 4GB - 1.
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*/
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#define ISA_DMA_THRESHOLD 0xffffffff
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#define ARCH_HAS_SG_CHAIN
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#endif /* _ASM_IA64_SCATTERLIST_H */
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